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Search Results: 1 - 10 of 744172 matches for " M.G.C.P. Marasinghe "
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Glycaemic Status On Admission In Patients With Acute Coronary Syndrome
J. Indrakumar,M.G.C.P. Marasinghe
Sri Lanka Journal of Critical Care , 2009,
Abstract: Introduction: In patients with acute coronary syndrome (ACS), hyperglycemia is a predictor of immediate and long-term cardiovascular mortality. Abnormal glucose regulation is present in the majority of these patients and is unrecognized in up to half of the cases. The objective of this study was to assess the glycaemic status of patients on admission with ACS.Methodology: Patients presenting with chest pain and falling into one of the acute coronary syndromes (STEMI, NSTEMI, and UA) were allocated in to two groups based on past history of Diabetes. Diagnosed Diabetic patients who were not on treatment were excluded from the study. Admission RBS and next day FBS were recorded in all patients.Results: 102 patients were enrolled for the study. Mean admission random blood sugar(RBS) and fasting blood sugar(FBS) of diabetic patients who were on treatment were significantly higher (308, 203 mg/dl) than that of patients without a past history of Diabetes (135, 111 mg/dl) P < 0.001. Out of the patients with diabetes, 88% had a RBS more than 140mg/dl and 59% had more than 200 mg/dl on admission. Patients without past history of Diabetes, these values were 32% and 5% respectively. 45% of patients without past history of Diabetes had impaired FBS values (100 - 126 mg/dl) and 17% had a FBS value more than 126 mg/dl. The blood glucose values (RBS and FBS) of each of the three types of ACSs (STEMI, NSTEMI, UA) did not show a significant difference among them.Conclusions: Hyperglycaemia is a major problem in our patients with and without a past history of diabetes when they present with ACS. Therefore prompt attention is necessary on blood glucose control in all patients, irrespective of the past status of diabetes. It is important to follow up the patients with abnormal blood glucose values and without a past history of diabetes , to detect the development of Diabetes.Keywords: acute coronary syndrome; glycaemic control; hyperglycaemia
A study of the process of desorption of hexavalent chromium
Amorim, W.B.;Hayashi, A.M.;Pimentel, P.F.;Silva, M.G.C.da;
Brazilian Journal of Chemical Engineering , 2003, DOI: 10.1590/S0104-66322003000300008
Abstract: in this work the process of desorption of hexavalent chromium, a toxic metal ion, from the marine algae sargassum sp, following biosorption experiments 23 factorial design was studied. a technique was applied to three eluents: hcl, h2so4 and edta. three factors of importance were evaluated: concentration of eluent, the ratio between mass of biosorbent and volume of eluent (s/l) and process time. a statistical analysis of the experimental results showed that the three variables evaluated are significant for all three eluents. the models for chromium desorption were validated, as the results agreed well with the observed values. through use of the response surface methodology, a factorial design based optimization technique; it was possible to identify the most suitable eluent and the interval of values for the process variables that resulted in the most significant desorption of chromium, which is relevant information for work aiming at process optimization.
A study of the process of desorption of hexavalent chromium
Amorim W.B.,Hayashi A.M.,Pimentel P.F.,Silva M.G.C.da
Brazilian Journal of Chemical Engineering , 2003,
Abstract: In this work the process of desorption of hexavalent chromium, a toxic metal ion, from the marine algae Sargassum sp, following biosorption experiments 23 factorial design was studied. A technique was applied to three eluents: HCl, H2SO4 and EDTA. Three factors of importance were evaluated: concentration of eluent, the ratio between mass of biosorbent and volume of eluent (S/L) and process time. A statistical analysis of the experimental results showed that the three variables evaluated are significant for all three eluents. The models for chromium desorption were validated, as the results agreed well with the observed values. Through use of the response surface methodology, a factorial design based optimization technique; it was possible to identify the most suitable eluent and the interval of values for the process variables that resulted in the most significant desorption of chromium, which is relevant information for work aiming at process optimization.
Prospettive giuridiche per la valorizzazione delle terre civiche in Sardegna
M.G.C Corradini
Aestimum , 2001,
Abstract:
Furosemide is associated with acute kidney injury in critically ill patients
Levi, T.M.;Rocha, M.S.;Almeida, D.N.;Martins, R.T.C.;Silva, M.G.C.;Santana, N.C.P.;Sanjuan, I.T.;Cruz, C.M.S.;
Brazilian Journal of Medical and Biological Research , 2012, DOI: 10.1590/S0100-879X2012007500093
Abstract: acute kidney injury (aki) is common in critically ill patients. diuretics are used without any evidence demonstrating a beneficial effect on renal function. the objective of the present study is to determine the incidence of aki in an intensive care unit (icu) and if there is an association between the use of furosemide and the development of aki. the study involved a hospital cohort in which 344 patients were consecutively enrolled from january 2010 to january 2011. a total of 132 patients (75 females and 57 males, average age 64 years) remained for analysis. most exclusions were related to icu discharge in the first 24 h. laboratory, sociodemographic and clinical data were collected until the development of aki, medical discharge or patient death. the incidence of aki was 55% (95%ci = 46-64). the predictors of aki found by univariate analysis were septic shock: or = 3.12, 95%ci = 1.36-7.14; use of furosemide: or = 3.27, 95%ci = 1.57-6.80, and age: or = 1.02 (95%ci = 1.00-1.04). analysis of the subgroup of patients with septic shock showed that the odds ratio of furosemide was 5.5 (95%ci = 1.16-26.02) for development of aki. age, use of furosemide, and septic shock were predictors of aki in critically ill patients. use of furosemide in the subgroup of patients with sepsis/septic shock increased (68.4%) the chance of development of aki when compared to the sample as a whole (43.9%).
Preliminary risk analysis applied to the handling of health-care waste
Carvalho, S.M.L.;Silva, M.G.C.;
Brazilian Journal of Chemical Engineering , 2002, DOI: 10.1590/S0104-66322002000400004
Abstract: between 75% and 90% of the waste produced by health-care providers no risk or is "general" health-care waste, comparable to domestic waste. the remaining 10-25% of health-care waste is regarded as hazardous due to one or more of the following characteristics: it may contain infectious agents, sharps, toxic or hazardous chemicals or it may be radioactive. infectious health-care waste, particularly sharps, has been responsible for most of the accidents reported in the literature. in this work the preliminary risks analysis (pra) technique was used to evaluate practices in the handling of infectious health-care waste. currently the pra technique is being used to identify and to evaluate the potential for hazard of the activities, products, and services from facilities and industries. the system studied was a health-care establishment which has handling practices for infectious waste. thirty-six procedures related to segregation, containment, internal collection, and storage operation were analyzed. the severity of the consequences of the failure (risk) that can occur from careless management of infectious health-care waste was classified into four categories: negligible, marginal, critical, and catastrophic. the results obtained in this study showed that events with critics consequences, about 80%, may occur during the implementation of the containment operation, suggesting the need to prioritize this operation. as a result of the methodology applied in this work, a flowchart the risk series was also obtained. in the flowchart the events that can occur as a consequence of a improper handling of infectious health-care waste, which can cause critical risks such as injuries from sharps and contamination (infection) from pathogenic microorganisms, are shown.
Preliminary risk analysis applied to the handling of health-care waste
Carvalho S.M.L.,Silva M.G.C.
Brazilian Journal of Chemical Engineering , 2002,
Abstract: Between 75% and 90% of the waste produced by health-care providers no risk or is "general" health-care waste, comparable to domestic waste. The remaining 10-25% of health-care waste is regarded as hazardous due to one or more of the following characteristics: it may contain infectious agents, sharps, toxic or hazardous chemicals or it may be radioactive. Infectious health-care waste, particularly sharps, has been responsible for most of the accidents reported in the literature. In this work the preliminary risks analysis (PRA) technique was used to evaluate practices in the handling of infectious health-care waste. Currently the PRA technique is being used to identify and to evaluate the potential for hazard of the activities, products, and services from facilities and industries. The system studied was a health-care establishment which has handling practices for infectious waste. Thirty-six procedures related to segregation, containment, internal collection, and storage operation were analyzed. The severity of the consequences of the failure (risk) that can occur from careless management of infectious health-care waste was classified into four categories: negligible, marginal, critical, and catastrophic. The results obtained in this study showed that events with critics consequences, about 80%, may occur during the implementation of the containment operation, suggesting the need to prioritize this operation. As a result of the methodology applied in this work, a flowchart the risk series was also obtained. In the flowchart the events that can occur as a consequence of a improper handling of infectious health-care waste, which can cause critical risks such as injuries from sharps and contamination (infection) from pathogenic microorganisms, are shown.
Retention and penetration of a conventional resin-based sealant and a photochromatic flowable composite resin placed on occlusal pits and fissures
Aguilar F,Drubi-Filho B,Casemiro L,Watanabe M.G.C
Journal of the Indian Society of Pedodontics and Preventive Dentistry , 2007,
Abstract: This study compares the retention and penetration of a conventional resin-based sealant (Fluroshield) and a photochromatic flowable composite resin (Tetric Flow Chroma) placed on occlusal pits and fissures and submitted to thermal or chemical cycling regimens. Penetration assessment - ten premolars were sealed with each material, isolated (except for the sealed surface) and immersed in 0.2% Rhodamine B. The teeth were serially sectioned in a mesiodistal direction. The images of the sections were digitized and analyzed (ImageLab). The distance between the most superficial and the deepest points on the occlusal central groove was calculated to determine the groove′s total depth. The length of the central groove filled with the sealant was divided by its total depth to obtain the percentage of sealing of the occlusal groove. Retention assessment - 30 premolars were sealed, their occlusal surfaces were photographed and the area occupied by the sealing materials was demarcated (ImageLab). The teeth were submitted to different treatments: thermocycled, stored in artificial saliva and immersed in acetic acid and saliva (10 cycles/day protocol for 30 days). New photographs were taken to assess the final area occupied by the materials. The difference between the final and initial area was calculated to obtain the material loss. The data was analyzed (two-way anova and Tukey′s test P < 0.05). Both materials presented similar penetration of the occlusal central groove. After thermal and chemical cycling, the materials did not differ with respect to retention, except for immersion in acetic acid. In this case, Tetric Flow Chroma presented greater retention than Fluoroshield.
Sele??o para produ??o de leite em núcleos MOET das ra?as zebuínas: um estudo de simula??o
Peixoto, M.G.C.D.;Pereira, C.S.;Fonseca, C.G.;Madalena, F.E.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2005, DOI: 10.1590/S0102-09352005000500013
Abstract: a stochastic genetic simulation of adult moet breeding nucleus schemes was carried out. a finite panmitic population with discrete generation and selection for a trait under an infinitesimal model were assumed. the heritabilities of .25, .35 and .45 and the repeatability of .50 were considered. different population sizes (n), mating strategies (a), number of moet progenies (p) and number of sires selected from full sib family (r) used in the definition of the nucleus scheme were evaluated. population sizes were of 16 donors/8 sires, 16 donors/4 sires and 32 donors/4 sires. mating strategies were hierarchical (h) - each donor was mated to only one sire, factorial i (f-i) - each donor was mated to two sires, and factorial ii (f-ii) - each donor was mated to four sires. the number of moet progenies from each donor by superovulation was 4 or 8. the number of selected sires from each full sib family was 1 or 2. generation interval (ig) of 3.89 years was used whatever the mating strategy evaluated and the ig of 4.15 was also used when the f-ii mating strategy was evaluated. all factors evaluated affected significantly (p<0.05) the genetic gain for all heritabilities considered. interactions between n×a, n×r and p×a were also significant (p<0.05). the interaction a×r had a significant effect (p<0.05) only for heritabilities of .25 and .35. all factors studied for all heritability values had a significant effect (p<0.05) on the inbreeding rate. the n×p, n×a, n×r and p×a interactions had also a significant effect (p<0.05) on the inbreeding rate. it was strengthened that the moet efficiency in producing viable embryos and positive pregnancies, besides the degree of reduction in ig, are responsible for the genetic progress rate in the moet selection nucleus schemes.
Effects of environmental factors on multiple ovulation of zebu donors
Peixoto, M.G.C.D.;Bergmann, J.A.G.;Fonseca, C.G.;Penna, V.M.;Pereira, C.S.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2006, DOI: 10.1590/S0102-09352006000400019
Abstract: data on 1,294 superovulations of brahman, gyr, guzerat and nellore females were used to evaluate the effects of: breed; herd; year of birth; inbreeding coefficient and age at superovulation of the donor; month, season and year of superovulation; hormone source and dose; and the number of previous treatments on the superovulation results. four data sets were considered to study the influence of donors? elimination effect after each consecutive superovulation. each one contained only records of the first, or of the two firsts, or three firsts or all superovulations. the average number of palpated corpora lutea per superovulation varied from 8.6 to 12.6. the total number of recovered structures and viable embryos ranged from 4.1 to 7.3 and from 7.3 to 13.8, respectively. least squares means of the number of viable embryos at first superovulation were 7.8 ± 6.6 (brahman), 3.7 ± 4.5 (gyr), 6.1 ± 5.9 (guzerat) and 5.2 ± 5.9 (nellore). the numbers of viable embryos of the second and the third superovulations were not different from those of the first superovulation. the mean intervals between first and second superovulations were 91.8 days for brahman, 101.8 days for gyr, 93.1 days for guzerat and 111.3 days for nellore donors. intervals between the second and the third superovulations were 134.3, 110.3, 116.4 and 108.5 days for brahman, gyr, guzerat and nellore donors, respectively. effects of herd nested within breed and dose nested within hormone affected all traits. for some data sets, the effects of month and order of superovulation on three traits were importants. the maximum number of viable embryos was observed for 7-8 year-old donors. the best responses for corpora lutea and recovered structures were observed for 4-5 year-old donors. inbreeding coefficient was positively associated to the number of recovered structures when data set on all superovulations was considered.
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